Hargreaves Halifax HD6682 150mm x 150mm Cast Iron Grey Rectangular 4 Branch Inspection Chamber
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Call for Availability150x150mm precast chamber unit with a rectangular door, avoiding a brick-built manhole at a four way junction below ground.
- Configuration - Rectangular door chamber sized for a four way junction.
- Footprint - 150x150mm branch sizing, matching the Halifax Drain range at this diameter.
- Body - A grey iron casting to BS EN 877, protected by a 2-pack epoxy coating of at least 150 microns average thickness.
- Servicing - The bolted rectangular door opens for rodding and inspection at the junction.
Installing a full brick or concrete manhole is not always proportionate for a smaller buried junction. The Halifax HD6682 packages a four way junction and a rectangular access door into one 150x150mm precast unit that drops straight into the run.
Why a chamber unit
Maintenance access at a junction follows the same general principle as elsewhere in BS EN 12056-2: somewhere to rod and inspect the pipework without digging it up. A precast chamber gets there without the labour of building a manhole from scratch, and this rectangular door version is sized for a four way configuration.
Build
- Casting - A grey iron casting to BS EN 877, protected by a 2-pack epoxy coating of at least 150 microns average thickness.
- Access door - Bolted rectangular door over the junction, opened for rodding and inspection.
Strength below ground
Buried pipework has to withstand more than its own weight: backfill loads and, in places, traffic loading above. Cast iron consistently exceeds the ring crush strength required by BS EN 877, giving it greater resistance to crushing than PVC or HDPE alternatives of the same diameter.
Full dimensions are set out in the manufacturer's Halifax Technical Guide.